Tenth to henry a



A 9 M 00 0 MW 1 W L E 2 0w M d 6 t n w a NM P N E P A K (No Model.)

' tervals, all as will be hereinafter set forth.

UN TED STATES PATENT ()FFICE.

K'AsPAH BILLING, oE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF oNE- .TENTHTo HENRY A. scHELL, OF sAME PLAoE.

ROTARY? ENGINE."

SPECIFICATION forming part of Letters PatentNo. 524,882, dated August21, 1894.

Application filed April 16, I894.

To all whom it may concern:

Be it known that I, KASPAR BILLING, a citizen of the United States,residing in the city. and county ofIhiladelphia, State of Pennsyl-Vania, have invented a new and usefulIm-Q provement'in Rotary Engines,which improvenient is fully set forth in. the following speci- Qfication and accompanying drawings.

My invention consists of improvements in rotary engines, as hereinafterdescribed 2 whereby the number of parts are reduced, there is lessliability of breakage, and the ex-f pansive force of the steam shall beeconomically and effectively applied.

A further object of the invention is to construct an improved valve, andto provide means for positively actuating the same, so as p to admit andcut-off the steam at proper in- Figure 1 represents an end elevation,showing the valve gear and steam'inlet of a rotary engine embodying myinvention. Fig. 2 represents a side elevation of the same, with thecover removed. Fig. 3 represents a vertical section of a-portion on lineas, w, Fig.1. Fig. 4 represents a perspective view of the Valve chestwith the upper portion broken away. Fig. 5 represents a. perspectiveview of the valve of the engine, andthe stem thereof.

Similar letters-of reference indicate corresponding parts intheseveralfigures.

Referring to the drawings: A designates the casing or cylinder of theengine, which is bored out to the depth H, and B designates the pistonadaptedto rotate therein, and having the wings or projections G, theflat portions of which receive the impact of the steam, said pistonbeing securedto the shaft 0, which is suitably journ'aled in the sideand cover D of the engine. j f j E designatesthe valve chest, and Fdesigw nates the steam inlet, which may enter the chest either at thetop or side, as shown in Fi 1.

a designates the exhaust outlet, and H designates the valve providedwith the port J, which registers at certain times with the port K, whichleads to the interior of the cylinder A. V

The valve H is constructed in the shape of a cylindrical shell, out inhalf, to allow for ex- Serial No. 507,680. (No model.)

pansion and contraction, and has one end closed at L, on which point thehead M of the valve stem N is adapted to rest, said head being providedwith a shoulder P, which abuts against the closed end L, so that anyrotary movement given to the stem N will be .imparted to the valve H. p

The valve stem N is actuated by means of the eccentric Q which issuitably attached to the shaft 0, and inthe present instance is providedwith a flange R, whichserves as a guide for the eccentric strap or yokeS, to which is attached the knuckle joint T, which is connected with thevalve stem N by means of the link U.

V designates a fly wheel, which mayor may not be employed.

W designates a pin passing through the link U and knuckle T.

It will thus be seen that when the eccentric is keyed to theshaft O, andconnections made to the valve stem N, as shown, the valve H will begiven an oscillatory movement, alternately admitting and cutting 0Esteam to the cylinder A. I I

X designates a suitable stuifing box for the valve chest, and Ydesignates a packing ring of composition or other suitable material,

I which is adapted to be screwed against a shoulder in the valve chestE. A suitable packing is also to be interposed between the cover Dandthe cylinder or casing A.

Z designates a clapper valve located in the recess L, of the cylinder A,and supported at one end by the journal A which has a suitable bearingin the boss K on the cover D, and at the other end bya stem B, whichextends through a suitable stuffing box 0.

D designates a spring carried on the stem B and'adapted at properintervals to engage the ends E of the dog F, which is mounted on theshaft 0, and rotates therewith.

The object of the clapper valve Z is to prevent live steam from blowingback through the exhaust opening G, and it will be noted that said valveis actuated initially by the impact of live steam alone thereupon, andits first movement is therefore independent of the operation of anyexternal devices, as will be hereinafter explained.

The valve chest E is bolted or otherwise steam, since thesame ispositively cut-oft at H has been moved by meansof the eccentric" and itsconnections, so that port J registerswith port K, and live steam is justentering the cylinder A. The pressure of thesteam forces the valve Zdown till it is in contact with the piston at M, so that no live steamcan flow back out through the exhaust port G, and the impact of thesteamonthe faceiG' of the projection of the piston B, causes the same torevolve. When the piston reaches about the point 0', indicatedin'dotted' lines in Fig. 2, the steam will be cut-off, the. valve -Hmoving soas to, close the port K, the work for the rest of the strokebeing done. byyexpansion.

When the face G of the piston B, reaches the exhaust outlet G, the steamescapes therefrom, immediately after which one of the ends E of the dogF comes in contact with the spring D, rotating the. stem B and ,forcing'the valve Z to the position shown in Figs. 2 and 3, which movementalways takes placejust before eitherof the projections G? reach} thesaid valve Z so that the said parts aref never in contact, and theengine is noiseless in operation. The parts are now in the p0sitionsshown in Figs. 2 and 4 of thedrawings, and the above described operationis repeated. It will be noticed that there is no waste of an early pointof the stroke.

In rotary engines of large size, the valve H will have the open end, inFig. 5, .closed,,as

shown in dotted lines.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a rotary engine, a casing, a piston therein, a steam chestcontaininga valve which controls the admission of steam to the cylinder,said valve consisting of asemi cylindrical shell with a port therein andhaving one end closed, and adapted to'contact with the head of the valvestem, a valve for preventing the exit of live steam from the exhaustport of the cylinder, and means for operating both valves from theexterior :of. the cylinder, said parts being combined substantially asdescribed.

2. In a rotary engine, a casing, a piston therein, a steam chestcontaining a valve .H,

consisting of a semi cylindrical shell with a port therein, and havingone end closed and engaged by the head of the valve stem,means foractuating said valve, a second valve Z pivotally supported in a recessin said casing, said valve having a stem provided with a spring adaptedto be engaged at intervals by the ends of a dog F, mounted on the shaft0, which carries the piston,;said parts being combined snbstantiallyasdescribed.

3. In a rotary engine, a casing A, recessed at'L','a valve Z located insaid recess, having one end pivoted at A, in the boss K on the cover- D,the other end of said valve having a stem B, carrying the spring D, dogF,

shaft'O, piston B, exhaust G, valve chest E,

'va'lve H provided with the port J, and having one end L adapted'toengage the headM of .the stem N, and means for actuating said valve,said parts being combined substantially as described.

4. The herein-described valve consisting of the semi-cylindrica1 shellI-I, provided with a port J, and having one end closed at L, a valvestem N having the head M, adapted to engage the part L, and means foractuating said valve,-said parts being combined substantially asdescribed.

, 5. In a rotary engine, a casing having an inlet and an exhaustport,apiston in said casing having projecting-faces, a'valve in said inletadapted to ride on said piston,;and to control thepassage between saidinlet and exhaust, said valve being actuated initially by steampressurealone, and having its return movement caused by the engagement atintervals, of a dog or its equivalent, with a yielding device attachedtosaid valve stem, a steam chest provided with a valve for controllingcommunication between said chest and cylinder casing, and means foractuating .said steam chest valve, substantially as described.

6. In a rotary engine, a casing having inlet andoutlet ports, a rotarypiston having projecting faces, a valve in said inlet for cutting ofilive steam from the exhaust port a steam chest with a valve controllingthe communication between said chest and casing, mechanism connectedwith the rotary piston for operating said chest valve, and a dog on theshaft of said piston adapted to contact with a spring on the journal ofsaid inlet valve,

said parts being combined substantially as described.

. KASPAR BILLING. Witnesses:

JOHN A. WIEDERSHEIM, E. H. FAIRBANKS.

